Stopping myself from biting my nails isn't the problem

Noticing I'm doing it, is! 

You'll find the biggest part of stopping is that it's so ingrained in your habbits, that half the time it's something you do subconsciously. I had limited success with the stuff you put on your nails, and in the end gave up. 

Still, least I don't have to remember to cut them every few weeks. *looks at toes* ah crap, excuse me.